so you want a HARD integral from the Berkeley Math Tournament
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basic number theory facts for math competition (Berkeley mini Math Tournament)
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Berkeley Math Tournament calculus tiebreaker
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Os pesquisadores pensaram que isso era um bug (integrais de Borwein)
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A Cambridge Integral Experience
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easy derivative but it took me 32 minutes
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Feynman's technique is the greatest integration method of all time
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so you want a VERY HARD math question?!
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